نتایج جستجو برای: sea level rise
تعداد نتایج: 1304243 فیلتر نتایج به سال:
While there is scientific consensus that global and local mean sea level (GMSL and LMSL) has risen since the late nineteenth century, the relative contribution of natural and anthropogenic forcing remains unclear. Here we provide a probabilistic upper range of long-term persistent natural GMSL/LMSL variability (P=0.99), which in turn, determines the minimum/maximum anthropogenic contribution si...
About 60 tide-gauge stations in the Kara, Laptev, East-Siberian and Chukchi Seas have recorded the sea level change from the 1950s through 1990s. Over this 40-year period, most of these stations show a significant sea level rise (SLR). In light of global change, this SLR could be a manifestation of warming in the Arctic coupled with a decrease of sea ice extent, warming of Atlantic waters, chan...
new cubs. Previous research has already shown that unstable ice can result in failures of on-ice denning attempts. Less ice than is suitable for denning apparently has led to an increased frequency of pregnant polar bears in this region choosing to den on land, " says Fischbach. Unlike other temperate and Arctic bear species that hibernate during winter months, polar bears remain active and sea...
Accurate monitoring of atmospheric carbon dioxide began 25 years ago. Since then, sufficient scientific evidence has been developed for two National Academy of Sciences review panels to conclude that sometime in the next century, atmospheric concentrations of C02 will almost certainly double and raise the atmosphere's mean surface temperature by at least 1.5C (2.7 F) and possibly as much as 4.5...
Recent aircraft and satellite laser altimeter surveys of the Amundsen Sea sector of West Antarctica show that local glaciers are discharging about 250 cubic kilometers of ice per year to the ocean, almost 60% more than is accumulated within their catchment basins. This discharge is sufficient to raise sea level by more than 0.2 millimeters per year. Glacier thinning rates near the coast during ...
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